The wcout is an object of the class wostream. It is used to display output to standard output devices.
It is present in the <iostream> header file.
We normally use 'std::cout' to display the output. The std::cout uses char as the character type while
std::wcout uses wchar_t as its character type. The main difference between char and wchar_t is that
char can hold only 255 values(narrow characters) while wchar_t can hold more than 255 value(wide characters). Char can be used to store ASCII character sets,
while wchar_t can be used to store Unicode UTF-16 character set.
Both usage of std::cout and std::wcout is same, but the main difference is that wcout can display many other Unicode characters other than ASCII.
The wcout object is generally used along with the insertion operator(<<) to display a stream of characters.
General syntax :
std::wcout << variable;
std::wcout << L"Hello, World!";
Here the L before the string represents that the string is of wchar_t type.
It can also be used along with some member functions:
- wcout.put(wchar_t &ch): Displays the wide character stored by ch.
- wcout.write(wchar_t *str, int n): Displays the first n character reading from str.
- wcout.setf(option): Sets a given option. Commonly used options are left, right, scientific, fixed, etc.
- wcout.unsetf(option): Unsets a given option.
- wcout.precision(int n): Sets the decimal precision to n while displaying floating-point values.
using namespace std;
wchar_t var1 = L"Welcome to cppsecrets!";
wchar_t ch = '!';
wcout << L"Hello, fello programmer!";
wcout << endl;
wcout.write(str,22); //Displays 22 charachters
wcout << "\n";